Have you ever been in the office and yawned — and then your coworker next to you yawned? Or how about your puppy yawning just after you do? Some people are so susceptible to yawning they might be doing it right now, just from reading this article. Contagious yawning is not a new phenomenon, and most of us have, in some form, experienced it in our lifetimes. But it’s an area of science that intersects both social and biological aspects of behavior that still baffles researchers today, and there are some interesting theories as to why this behavior has developed.
— Read on betterreport.com/yawning-explained/